log4cplus_Logger(3)
| log4cplus::Logger(3) | log4cplus | log4cplus::Logger(3) |
NAME
log4cplus::Logger - This is the central class in the log4cplus package.
SYNOPSIS
#include <logger.h>
Inherits log4cplus::spi::AppenderAttachable.
Public Member Functions
void assertion (bool assertionVal, const
log4cplus::tstring &msg) const
If assertionVal parameter is false, then logs msg with
FATAL_LOG_LEVEL log level. void closeNestedAppenders () const
Close all attached appenders implementing the AppenderAttachable interface.
bool isEnabledFor (LogLevel ll) const
Check whether this logger is enabled for a given LogLevel passed as parameter.
void log (LogLevel ll, const log4cplus::tstring
&message, const char *file=LOG4CPLUS_CALLER_FILE(), int
line=LOG4CPLUS_CALLER_LINE(), const char
*function=LOG4CPLUS_CALLER_FUNCTION()) const
This generic form is intended to be used by wrappers. void log
(spi::InternalLoggingEvent const &) const
void forcedLog (LogLevel ll, const log4cplus::tstring
&message, const char *file=LOG4CPLUS_CALLER_FILE(), int
line=LOG4CPLUS_CALLER_LINE(), const char
*function=LOG4CPLUS_CALLER_FUNCTION()) const
This method creates a new logging event and logs the event without further
checks. void forcedLog (spi::InternalLoggingEvent const &)
const
void callAppenders (const spi::InternalLoggingEvent &event)
const
Call the appenders in the hierrachy starting at this. LogLevel
getChainedLogLevel () const
Starting from this logger, search the logger hierarchy for a 'set' LogLevel
and return it. LogLevel getLogLevel () const
Returns the assigned LogLevel, if any, for this Logger. void
setLogLevel (LogLevel ll)
Set the LogLevel of this Logger. Hierarchy &
getHierarchy () const
Return the the Hierarchy where this Logger instance is
attached. const log4cplus::tstring & getName () const
Return the logger name. bool getAdditivity () const
Get the additivity flag for this Logger instance. void
setAdditivity (bool additive)
Set the additivity flag for this Logger instance. virtual void
addAppender (SharedAppenderPtr newAppender)
Add an appender. virtual SharedAppenderPtrList getAllAppenders
()
Get all previously added appenders as an Enumeration. virtual
SharedAppenderPtr getAppender (const log4cplus::tstring
&name)
Get an appender by name. virtual void removeAllAppenders ()
Remove all previously added appenders. virtual void removeAppender
(SharedAppenderPtr appender)
Remove the appender passed as parameter from the list of appenders. virtual
void removeAppender (const log4cplus::tstring &name)
Remove the appender with the name passed as parameter from the list of
appenders. Logger () LOG4CPLUS_NOEXCEPT
Logger (const Logger &rhs) LOG4CPLUS_NOEXCEPT
Logger & operator= (const Logger &rhs)
LOG4CPLUS_NOEXCEPT
Logger (Logger &&rhs) LOG4CPLUS_NOEXCEPT
Logger & operator= (Logger &&rhs)
LOG4CPLUS_NOEXCEPT
virtual ~Logger ()
void swap (Logger &) LOG4CPLUS_NOEXCEPT
Logger getParent () const
Used to retrieve the parent of this Logger in the Logger tree.
Static Public Member Functions
static bool exists (const log4cplus::tstring
&name)
Returns true if the named logger exists (in the default hierarchy).
static LoggerList getCurrentLoggers ()
static Hierarchy & getDefaultHierarchy ()
Return the default Hierarchy instance. static Logger
getInstance (const log4cplus::tstring &name)
Retrieve a logger with name name. static Logger
getInstance (const log4cplus::tstring &name,
spi::LoggerFactory &factory)
Like getInstance() except that the type of logger instantiated depends
on the type returned by the {} method of the factory parameter.
static Logger getRoot ()
Return the root of the default logger hierrachy. static void shutdown
()
Calling this method will safely close and remove all appenders in all
the loggers including root contained in the default hierachy.
Protected Attributes
spi::LoggerImpl * value = nullptr
This is a pointer to the implementation class.
Friends
class log4cplus::spi::LoggerImpl
class log4cplus::Hierarchy
class log4cplus::HierarchyLocker
class log4cplus::DefaultLoggerFactory
Detailed Description
This is the central class in the log4cplus package.
One of the distintive features of log4cplus are hierarchical loggers and their evaluation.
Definition at line 69 of file logger.h.
Constructor & Destructor Documentation
log4cplus::Logger::Logger ()
log4cplus::Logger::Logger (const Logger & rhs)
log4cplus::Logger::Logger (Logger && rhs)
virtual log4cplus::Logger::~Logger () [virtual]
Member Function Documentation
virtual void log4cplus::Logger::addAppender (SharedAppenderPtr newAppender) [virtual]
Add an appender.
Implements log4cplus::spi::AppenderAttachable.
void log4cplus::Logger::assertion (bool assertionVal, const log4cplus::tstring & msg) const
If assertionVal parameter is false, then logs msg with FATAL_LOG_LEVEL log level.
Parameters
msg The message to print if assertion is false.
void log4cplus::Logger::callAppenders (const spi::InternalLoggingEvent & event) const
Call the appenders in the hierrachy starting at this. If no appenders could be found, emit a warning.
This method calls all the appenders inherited from the hierarchy circumventing any evaluation of whether to log or not to log the particular log request.
Parameters
void log4cplus::Logger::closeNestedAppenders () const
Close all attached appenders implementing the AppenderAttachable interface.
static bool log4cplus::Logger::exists (const log4cplus::tstring & name) [static]
Returns true if the named logger exists (in the default hierarchy).
Parameters
void log4cplus::Logger::forcedLog (LogLevel ll, const log4cplus::tstring & message, const char * file = LOG4CPLUS_CALLER_FILE(), int line = LOG4CPLUS_CALLER_LINE(), const char * function = LOG4CPLUS_CALLER_FUNCTION()) const
This method creates a new logging event and logs the event without further checks.
Referenced by log4cplus::TraceLogger::TraceLogger(), and log4cplus::TraceLogger::~TraceLogger().
void log4cplus::Logger::forcedLog (spi::InternalLoggingEvent const &) const
bool log4cplus::Logger::getAdditivity () const
Get the additivity flag for this Logger instance.
virtual SharedAppenderPtrList log4cplus::Logger::getAllAppenders () [virtual]
Get all previously added appenders as an Enumeration.
Implements log4cplus::spi::AppenderAttachable.
virtual SharedAppenderPtr log4cplus::Logger::getAppender (const log4cplus::tstring & name) [virtual]
Get an appender by name.
Implements log4cplus::spi::AppenderAttachable.
LogLevel log4cplus::Logger::getChainedLogLevel () const
Starting from this logger, search the logger hierarchy for a 'set' LogLevel and return it. Otherwise, return the LogLevel of the root logger.
The Logger class is designed so that this method executes as quickly as possible.
static LoggerList log4cplus::Logger::getCurrentLoggers () [static]
static Hierarchy& log4cplus::Logger::getDefaultHierarchy () [static]
Return the default Hierarchy instance.
Hierarchy& log4cplus::Logger::getHierarchy () const
Return the the Hierarchy where this Logger instance is attached.
static Logger log4cplus::Logger::getInstance (const log4cplus::tstring & name) [static]
Retrieve a logger with name name. If the named logger already exists, then the existing instance will be returned. Otherwise, a new instance is created.
By default, loggers do not have a set LogLevel but inherit it from the hierarchy. This is one of the central features of log4cplus.
Parameters
Referenced by log4cplus::detail::macros_get_logger().
static Logger log4cplus::Logger::getInstance (const log4cplus::tstring & name, spi::LoggerFactory & factory) [static]
Like getInstance() except that the type of logger instantiated depends on the type returned by the {} method of the factory parameter. This method is intended to be used by sub-classes.
Parameters
factory A spi::LoggerFactory implementation that will actually create a new Instance.
LogLevel log4cplus::Logger::getLogLevel () const
Returns the assigned LogLevel, if any, for this Logger.
Returns
const log4cplus::tstring& log4cplus::Logger::getName () const
Return the logger name.
Logger log4cplus::Logger::getParent () const
Used to retrieve the parent of this Logger in the Logger tree.
static Logger log4cplus::Logger::getRoot () [static]
Return the root of the default logger hierrachy. The root logger is always instantiated and available. It's name is 'root'.
Nevertheless, calling Logger.getInstance('root') does not retrieve the root logger but a logger just under root named 'root'.
bool log4cplus::Logger::isEnabledFor (LogLevel ll) const
Check whether this logger is enabled for a given LogLevel passed as parameter.
Returns
Referenced by log4cplus::TraceLogger::TraceLogger(), and log4cplus::TraceLogger::~TraceLogger().
void log4cplus::Logger::log (LogLevel ll, const log4cplus::tstring & message, const char * file = LOG4CPLUS_CALLER_FILE(), int line = LOG4CPLUS_CALLER_LINE(), const char * function = LOG4CPLUS_CALLER_FUNCTION()) const
This generic form is intended to be used by wrappers.
void log4cplus::Logger::log (spi::InternalLoggingEvent const &) const
Logger& log4cplus::Logger::operator= (const Logger & rhs)
Logger& log4cplus::Logger::operator= (Logger && rhs)
virtual void log4cplus::Logger::removeAllAppenders () [virtual]
Remove all previously added appenders.
Implements log4cplus::spi::AppenderAttachable.
virtual void log4cplus::Logger::removeAppender (const log4cplus::tstring & name) [virtual]
Remove the appender with the name passed as parameter from the list of appenders.
Implements log4cplus::spi::AppenderAttachable.
virtual void log4cplus::Logger::removeAppender (SharedAppenderPtr appender) [virtual]
Remove the appender passed as parameter from the list of appenders.
Implements log4cplus::spi::AppenderAttachable.
void log4cplus::Logger::setAdditivity (bool additive)
Set the additivity flag for this Logger instance.
void log4cplus::Logger::setLogLevel (LogLevel ll)
Set the LogLevel of this Logger.
static void log4cplus::Logger::shutdown () [static]
Calling this method will safely close and remove all appenders in all the loggers including root contained in the default hierachy. Some appenders such as SocketAppender need to be closed before the application exits. Otherwise, pending logging events might be lost.
The shutdown method is careful to close nested appenders before closing regular appenders. This is allows configurations where a regular appender is attached to a logger and again to a nested appender.
void log4cplus::Logger::swap (Logger &)
Friends And Related Function Documentation
friend class log4cplus::DefaultLoggerFactory [friend]
Definition at line 304 of file logger.h.
friend class log4cplus::Hierarchy [friend]
Definition at line 302 of file logger.h.
friend class log4cplus::HierarchyLocker [friend]
Definition at line 303 of file logger.h.
friend class log4cplus::spi::LoggerImpl [friend]
Definition at line 301 of file logger.h.
Member Data Documentation
spi::LoggerImpl* log4cplus::Logger::value = nullptr [protected]
This is a pointer to the implementation class.
Definition at line 285 of file logger.h.
Author
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| Fri Jun 18 2021 | Version 2.0.6 |
